Functions for computing subscores for a test using different methods in both classical test theory (CTT) and item response theory (IRT). This package enables three sets of subscoring methods within the framework of CTT and IRT: Wainer's augmentation method, Haberman's three subscoring methods, and Yen's objective performance index (OPI). The package also includes the function to compute Proportional Reduction of Mean Squared Errors (PRMSEs) in Haberman's methods which are used to examine whether test subscores are of added value.
Package details 


Author  Shenghai Dai [aut, cre], Xiaolin Wang [aut], Dubravka Svetina [aut] 
Date of publication  20161203 00:53:13 
Maintainer  Shenghai Dai <[email protected]> 
License  GPL (>= 2) 
Version  2.0 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.